Add built-in embedding engine into AnythingLLM (#411)

* Implement use of native embedder (all-Mini-L6-v2)
stop showing prisma queries during dev

* Add native embedder as an available embedder selection

* wrap model loader in try/catch

* print progress on download

* Update to progress output for embedder

* move embedder selection options to component

* forgot import

* add Data privacy alert updates for local embedder